SCJKBH-T-03L DTS MM Sensing  Cable  is a type of fiber optic sensor that is placed inside a spiral armored tube. The outer surface of the spiral armored tube is reinforced with aramid and metal wire weaving, and the outer protection is protected by low smoke, halogen-free, and flame-retardant materials. The optical unit adopts sensing fiber, which meets the international standards for single mode and multimode fiber indicators while also possessing excellent Raman scattering characteristics. This type of optical cable is widely used for tunnel fire temperature measurement, fire temperature measurement in large industrial enterprises such as petrochemical, steel, and coal, and health inspection in large buildings such as bridges and warehouses. It is combined with dedicated DTS equipment to achieve system temperature measurement.